Analysis

  • max time kernel
    27s
  • max time network
    12s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    21-04-2021 15:22

General

  • Target

    4f135253467f0d070e905a74e66c77a9914859651f6e7f58537bbda42d622824.dll

  • Size

    162KB

  • MD5

    3cd70fa2568fc7d99ff5c0e172c479db

  • SHA1

    3b0ffd8ab489773a2be7df84817c30348f8e11bc

  • SHA256

    4f135253467f0d070e905a74e66c77a9914859651f6e7f58537bbda42d622824

  • SHA512

    8680ec75e6a59ae8f213b236ec395837eca3397f5ebaac48abfe73172354af3806fccf5d88f488fa4f4f030cb924b519eb6f865791214a8c9d77322c5e698e1d

Malware Config

Extracted

Family

dridex

Botnet

40112

C2

107.172.227.10:443

172.93.133.123:2303

108.168.61.147:8172

rc4.plain
rc4.plain

Signatures

  • Dridex

    Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.

  • Dridex Loader 1 IoCs

    Detects Dridex both x86 and x64 loader in memory.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\4f135253467f0d070e905a74e66c77a9914859651f6e7f58537bbda42d622824.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1840
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\4f135253467f0d070e905a74e66c77a9914859651f6e7f58537bbda42d622824.dll,#1
      2⤵
      • Checks whether UAC is enabled
      PID:2008

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2008-59-0x0000000000000000-mapping.dmp

  • memory/2008-60-0x00000000757C1000-0x00000000757C3000-memory.dmp

    Filesize

    8KB

  • memory/2008-61-0x0000000074F40000-0x0000000074F6E000-memory.dmp

    Filesize

    184KB

  • memory/2008-63-0x0000000000130000-0x0000000000136000-memory.dmp

    Filesize

    24KB